Brake for axminster loom tube frames



Dec. 27, 1938. E. J DACEY BRAKE FOR AXMINSTER LOOM TUBE FRAMES Original File d Dec. 20, 1937 INVENTOR.

2 2M 27 mcey BY v l ATTORNEY z' Patented Dec. 27, 1938 UNITED STATES PATENT oFIucE BRAKE FOR AXMINSTER LOOM TUBE FRAllIES Edward J. Dacey, Philadelphia, Pa., assignor to (Jrompton & Knowles Loom Works, Worcester, Mass, a corporation of Massachusetts Original application December 20, 1937, Serial No. 180,814. Divided and this application May 3, 1938, Serial No. 205,752

8 Claims. (Cl. 139-10) This is a division of my co-pending application. present invention to provide the hook with a Serial No. 180,814, filed December 20, 1937. supporting lug to engage the intermediate mem- This invention relates to improvements in tube ber of the triple link when the tube frame is upframes for Axminster looms and it is the general side down. In order that the spool may be held object of the invention to provide a construction against accidental turning it is a further object 5 permitting the use of a strong hook and ear for of my invention to provide a friction pad norattachment to the transporting chain. mally engaging the spool head but moved to re- As heretofore constructed it has been custome s g Pos o by t ho W the etter is ary to provide Axminster tube frames with ears pushed from the chain. V secured to the ends of the frame and offset out- With these and other objects in View which will .10 wardly for engagement with the double links of appe as the d s r p proceeds. y v t o the chain. The attaching hook passes through resides in the combination and arrangement of a slot formed in the ear and this slot weakens the pa ts herein described and Set forth.

ear so that the latter is not suitable for use with In the eeeempenying drawing, w n a long heavy tube frames. It is an important obvenient embodiment of my invention is setforth, 15 ject of my present invention to provide a con- Fig. l is a vertical longitudinal section through struction employing a relatively heavy ear which n d t tube frame Showing the hook in is substantially straight, together with an atupp rti p sit a d the clutch pp a taching hook which lies wholly outside the ear hook releasing DOSitlOn, the Spool and tuft y so that the latter need not be offset or slotted. tubes being Shown in elevation, 20

In the usual construction the upper tongue of Fig. 2 is an end elevation taken in the direction the ear extends into the double link of the transof arrow 2, Fig. l, porting chain While the hook engages the inner Fig. 3 is a plan View looking in the direction of of the link members and lies outside the latter. ow 3,

It is a further object of my present invention Fig. 4 is a detailed vertical section On line 4-4, 25

to project the hook as well as the ear into the Fig. space between two link members of the chain. 5 is a p V w Of an improved chain, and By this construction the Wear incident to attach- 6 is a vertical transverse Section through ing and detaching the tube frame is distributed he tube f a e t e On e of P9 to two chain members, one engaging the hook Referring to the drawing, the yarn spool S and the other engaging the ear. rotates in a bearing I0 secured to the upper sur- It has been customary heretofore to construct face of a hollow metal tube l I. The latter carthe transporting chains of Axminster looms of ries the tuft tubes T of usual construction, while alternate single and double links, the latter havthe clutch C may have an inwardly and downing holding relation with the ears and hooks of wardly inclined lip l2 and a vertical web I3 carthe tube frames. It is a further object of my rying a pivot M to be received by the forward present invention to provide a new form of chain end of a transfer lever. A rod is is pivoted to having a triple link to replace the double link the upper part of the web I3 for the purpose of of the former construction. My improved chain rocking the tube frame about the stud l4 when in effect is the old type of chain with a third link in cloth forming position. The clutch may have 40 added toeach double link, the space between the the usual side wings I! and be operated in subthird link and the adjacent member of the double stantially the usual manner.

link being sufiiciently wide to receive both the A block 20 fits into the end of the tube II and hook and the ear of the tube frame. v has an internal square slide bearing 2! extending When using the improved chain just described therethrough. The block may be held in position I prefer to have the hook latched over the interin any approved manner as by welding to the mediate or center member of the triple link. tube and has attached to the inner end thereof This places the supporting strain on substantially a bearing plate 22 held in position by screws 23 the same part of the link as formerly. In the which pass into the block. The plate 22 has a 0 older constructions, however the ear which excylindrical slide bore 24 for a purpose to be detends into the double link has been formed with scribed. shoulders so that the tube frame when upside The ea or bracket 30 of the tube frame shown down rests on the longitudinal center of the is m d o a flat Strip of Sheet metal, the we chain. In order to retain these same conditions ends of which are held to the block 20 by sc ews as nearly as possible it is a further objectvof my 3| and ear extends upwardly as indicated in Fig. 55

' member 52.

1 without being offset in the usual way. The lower part of the bracket has a square horizontally extending bore 32 in alignment with the bore 28 of the block. If desired the upper end of the ear may be reduced as at 33 to define shoulders 34, see Fig. 2.

The hook member 49 is of the sliding type and is formed of a fiat rigid metallic strip the upper end of which may be bent in the form of a hook 4| in a direction away from the tongue 33. The lower end of the hook member has welded thereto a square gudgeon 42 which extends through the bore 32 and into the bore 2!. of block 20. A reduced cylindrical extension 44- extends through the remainder of the bore 21 and the bearing 24 to project inwardly beyond the plate 22 sufficiently to receive a collar 45 held in adjusted position along the extension 44 by means of a set screw 46. A spring 41 around the extension is interposed between the plate 22 and the slide bearing 42 and exertsa compressive force tending to move a hook member 40- outwar-dly or away from the block 20 and bracket 39, thismotion being limited by the collar 45.

The chain H is formed of single links 50 as shown in Fig. 5 between which are located triple links formed of members 5! and 52 which are very similar to corresponding parts of the ordinary tube frame chain, and an additional third member 53 spaced from member 52, as suggested in Fig. 5. This space is determined by the length of collars 54 on the pins 55 which hold the links of the chain together.

The chain sprocket 60 may be substantially of the usual form and has a series of pockets one of which is shown at 6! to receive the tongue 33. The hook member is provided with a lug 65 spaced below the hooked end 4| a distance somewhat greater than the width of the intervening part of link 52 for a purpose to be described.

In order that the spool may be held against accidental rotation but free to turn when pulling off I provide a brake lever 10 pivoted at H to the bearing H3 and form this lever with an upper friction arm 12 adapted to bear against the web 13 of the spool head 14. The lever also has a lower arm 15 projecting through a narrow opening 13 in the car and extending beyond the latter sufficiently to be engaged by the hook when the latter moves to chain releasing position. A spring '11 between the bearing H] and the arm 15 holds the upper part 12 of the lever against the spool to prevent turning of the latter while the tube frame is being transported by the chain.

In operation, the chain will be given successive step by step motions by mechanism not shown but well understood to place the tube frames one at a time in the position indicated in Fig. 2. When the tube frame arrives in this position the bracket 30 will extend through the space 80 be tween link members 52 and 53, as will also the hooked end 4| disposed over the link member 52. In this position-the lug 65 is under the The relatively heavy compression spring 41 holds the hook in the position shown in Fig. 1, the collar 45 determining its position.

When the tube frame is to be removed from the chain the clutch moves inwardly or to the left from the position shown in Fig. 1, the lip l2 raising the tube frame slightly to lift the hook 41 above the link member 52, after which continued inward motion of the clutch will effect engagement of the wall l3 with the hook member s. 40* and the latter will move to the'left against the action of spring 41. The square bearing 42 and bore 2| of the block require the hook to move with a right line motion until the hook 4| is entirely clear of the member 52. As the clutch nears the end of its inward motion it will force the hook member 40 against the end15 on the lever 70 androck the same slightly in a counterclockwise direction as viewed in Fig. 1 against the action of spring H to remove the frictional braking force from the spool.

The clutch thereupon descends in well-known manner and the tube frame is rocked about the stud it during the tuft forming operation, after which the clutch is raised to cause the tongue 33 and the hook 40 to enter the space 80 of the corresponding triple link. The clutch then moves outwardly or to the right as viewed in Fig. 1 and hook 4;! passes over a link member 52. During this motion of the hook the lever 10 returns to its normal braking position with respect to the spool under the action of spring 71. As the clutch nears the outer end of its motion the collar 45, will engage the plate 22 and the hook will be properly located with respect to the link member 52. a

As the tube frame travels with the chain the time will come when it will be over a guide sprocket notshown, but forming the usual part of an Axminster loom, at which time the tube frame will be upside down. The weight of supporting the hook will thereupon be transferred from the hook 4! to the lug 65. The latter engages. a link member 52 at a point not far removed from the longitudinal center of the part of the chain defined by links 50, 5i and 52. The strain of supporting the tube frame in this inverted position is therefore borne by member 52- and preferably though not necessarily is not carried by the member 53 or the collars 54. If desired, however, the latter may have engaging relation with respect to theshoulders 34, but I prefer to depend upon the lug 65 to support the tube frame when inverted.

It is to be understood that the matter described and shown in connection with Fig. 1 is duplicated at the opposite end of the tube frame, and that the clutches and operating mechanism therefor, together with the sprocket 60,.are substantially the same as those found in the usual Axminster loom. The third additional link 53 and other structure not specifically associated with the brake T0 is described. and claimed in a co-pending application Serial No. 180;814.

From the foregoing it will be seen that I have provided a tube framewherein the hook lies entirely outside the ear or bracket 30. and that the latter can be made without bending and without the extensive perforation and slotting as heretofore. It will also be seen that the chain has been modified by adding a third member to the usual double link and that both the bracket and the hook pass into the space between the third member and the adjacent member of the usual double link, thereby causing engagement of two members of the chain and distributing the wear as distinguished from former practice where both the hook and the bracket engage the same chain member. It will also be seen that the. lug 65 supports the tube frame when inverted and places the load of the frame on the chain at a point close to the longitudinal center of that part of the chain corresponding to earlier types of chains. Also, motion of the hook member 40 releases lever 1!] to relieve the friction brake on the spool.

Having thus described my invention it will be seen that changes and modifications may be made therein by those skilled in the art without departing from the spirit and scope of the invention and I do not wish to be limited to the details herein disclosed, but what I claim is:

1. In an Axminster loom, a tube frame, a yarn spool rotatable on the tube frame, a friction brake normally held against the spool to resist accidental rotation of the latter, a hook for supporting the tube frame normally spaced from the brake, and means to move the hook to a non-supporting position and against the brake to move the latter out 'of contact with respect to the spool.

2. In an Axminster loom, a tube frame, a spool rotatable on the tube frame, a brake normally engaging the spool to resist rotation thereof, a hook normally spaced from the brake and in tube frame supporting position, and means to movethe hook away from the supporting position and against the brake to move the latter out of engagement with respect to the spool.

3. In an Axminster loom, a tube frame, a yarn spool rotatable on the tube frame, a bearing for said spool, a brake pivoted on said bearing to engage and resist accidental rotation of the spool, a supporting hook for the tube frame normally in supporting position and spaced from the brake, and means to move the hook away from supporting position and into engagement with the brake to move the latter pivotally out of engagement with the spool.

4. In an Axminster loom, a tube frame, a spool bearing on the tube frame, a yarn spool rotatable in the bearing, an ear extending laterally from and extending from the tube frame, a brake lever pivoted on thebearing having engagement with the spool to resist accidental rotation of the latter, said brake also extending through the ear, a hook normally in tube frame supporting position and spaced from the brake and ear, and means to move the hook toward the ear and into engagement with the brake to rock the latter out of engagement with the spool.

5. In an Axminster loom having a transporting chain, a yarn tube frame, a yarn spool rotatable on the tube frame, a brake normally resisting rotation of the spool, attaching means to connect the tube frame to the chain, and means to move the attaching means away from the chain and into engagement with the brake to move the latter out of braking relation with respect to the spool.

6. In an Axminster loom having a transporting chain, a yarn tube frame, a yarn spool rotatable thereon, a laterally extending chain engaging ear secured to the tube frame, a hook located outside the ear and normally engaging the chain to support the tube frame and spaced from said ear, a

brake normally resisting rotation of the spool and having a portion located in the space between the ear and the hook, and means to move the hook toward the ear and into engagement with said portion of the brake to move the latter out of braking relation with respect to the spool.

7. In an Axminster loom having a transporting chain, a yarn tube frame, a yarn spool'rotatable on the tube frame, a laterally extending chain engaging ear on the tube frame, a hook located outside the ear and normally in chain engaging position to support the tube frame and spaced from the car, a brake normally resisting rotation of the spool and having a portion extending through the ear and into the space between said ear and the hook, and means to move the hook away from supporting relation with respect to the chain and toward the ear and into engagement with said portion of the brake to move the latter out of braking relation with respect to the spool.

8. In an Axminster loom having a transporting chain, a yarn tube frame, a yarn spool rotatable on the tube frame, an ear secured to and extending laterally from the tube frame to engage the chain, a hook located outside the ear and normally having holding engagement with the chain to support the tube frame, a brake supported by the tube frame and normally resisting rotation of the spool and having a portion located between the ear and the hook, and means to move the hook toward the ear to disengage said hook from the chain and cause said hook to engage said portion of the brake located between the ear and hook to move said brake out of brak- EDWARD J. DACEY. 

